Threshold-based cooperative communication of energy harvesting active networked tags. (2017)

• Record Type: Journal Article
• Authors: Mulatu, Mengistu A.; Chang, Li-Chung; Han, Yunghsiang S.; Mengistu, Fikreselam G.; Tseng, Der-Feng
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 24:Number 4(2017)
• Page Start: 225
• Page End: 236
• Publication Date: 2017
• Subjects: cooperative transmission strategy -- energy harvesting tags -- MDP -- Markov decision process -- value iteration -- battery threshold -- cooperative communication -- simulation; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

Using cooperative transmission allows energy-harvesting active networked tags (EnHANTs) to cooperate regarding information transmission and reception, achieving higher throughput compared with non-cooperative counterparts. In this paper, a battery-threshold-based optimal cooperative transmission strategy is proposed for EnHANTs, allowing EnHANT-equipped objects to communicate with the destination (i.e., the reader) either directly or by cooperating with neighbouring objects. A strategy adapted to request states and available energy resources is considered, and an optimal transmission policy for EnHANTs is developed to maximise the long-term average throughput by formulating a Markov decision process (MDP) model. The simulated results indicate that the proposed strategy yields superior performance compared with single-link transmission.